Interrelationships between Reading Disability and Attention-Deficit/Hyperactivity Disorder

Evidence from a number of investigations suggests a considerable overlap between reading disability (RD) and attention deficit-hyperactivity disorder (ADHD). We investigate the relationship between RD and ADHD in a cohort of 186 children 7.5–9.5 years of age, recruited explicitly to address classification and definitional issues in these disorders. Using multivariate methods, we examine the hypothesis that RD and ADHD represent separate diagnostic entities that frequently co-occur in the same individual. The results suggest that RD is characterized by deficits within the language system, in particular a subcomponent within that system, phonological processing; in contrast, such linguistic deficits are not characteristic of ADHD unless ADHD is associated with RD. When children with both RD and ADHD are examined, both the linguistic deficits associated with RD and the behavioral characteristics associated with ADHD are apparent, but these deficits are not synergistic. We conclude that RD and ADHD represent separate disorders that frequently co-occur.     

A randomised controlled trial of a brief online mindfulness-based intervention

ObjectivesThere is growing evidence that mindfulness has positive consequences for both psychological and physical health in both clinical and non-clinical populations. The potential benefits of mindfulness underpin a range of therapeutic intervention approaches designed to increase mindfulness in both clinical and community contexts. Self-guided mindfulness-based interventions may be a way to increase access to the benefits of mindfulness. This study explored whether a brief, online, mindfulness-based intervention can increase mindfulness and reduce perceived stress and anxiety/depression symptoms within a student population.MethodOne hundred and four students were randomly allocated to either immediately start a two-week, self-guided, online, mindfulness-based intervention or a wait-list control. Measures of mindfulness, perceived stress and anxiety/depression were administered before and after the intervention period.ResultsIntention to treat analysis identified significant group by time interactions for mindfulness skills, perceived stress and anxiety/depression symptoms. Participation in the intervention was associated with significant improvements in all measured domains, where no significant changes on these measures were found for the control group.ConclusionsThis provides evidence in support of the feasibility and effectiveness of shorter self-guided mindfulness-based interventions. The limitations and implications of this study for clinical practice are discussed.     

Robust tests of equivalence for k independent groups

A common question of interest to researchers in psychology is the equivalence of two or more groups. Failure to reject the null hypothesis of traditional hypothesis tests such as the ANOVA F‐test (i.e., H₀: μ₁ = … = μ_k) does not imply the equivalence of the population means. Researchers interested in determining the equivalence of k independent groups should apply a one‐way test of equivalence (e.g., Wellek, 2003). The goals of this study were to investigate the robustness of the one‐way Wellek test of equivalence to violations of homogeneity of variance assumption, and compare the Type I error rates and power of the Wellek test with a heteroscedastic version which was based on the logic of the one‐way Welch (1951) F‐test. The results indicate that the proposed Wellek–Welch test was insensitive to violations of the homogeneity of variance assumption, whereas the original Wellek test was not appropriate when the population variances were not equal.     

Validating Measures of Psychological Well-being by Contrasting Samples Employed in Hazardous and Less Hazardous Work

The study investigated whether differences between contrasting groups reflect significant differences in psychological well-being scores. Membership of hazardous vs. less hazardous occupations in the same profession served as proxy measures of well-being. Antonovsky's Sense of Coherence (SOC), Block & Kremen's Ego-resiliency, and Goldberg's Emotional Stability scales were validated. Study 1 compared mine rescue team members and ordinary miners (n = 34, 41) and Study 2 police special task force members and regular officers (n = 43, 41). In Study 1, SOC and job satisfaction predicted group membership. In Study 2, satisfaction with life and extraversion scales predicted group membership, as did SOC in a secondary analysis. The SOC scale could predict psychological well-being in hazardous work settings.     

Therapeutic outcomes in the Welsh Government's school‐based counselling strategy: An evaluation

Aims: The purpose of this study was to evaluate the outcomes of school‐based counselling, as delivered in the Welsh Government's School‐based Counselling Strategy, for reducing psychological distress in young people aged 11–18. Method: The study used a quantitative cohort design, comparing levels of distress on either the Young Person's CORE (YP‐CORE) or the Strengths and Difficulties Questionnaire (SDQ) from baseline to endpoint. Data were available on 3613 episodes of counselling, across 42 datasets. Meta‐analytical procedures were used to identify the mean effect size and predictors of outcomes. Results: Within each dataset, counselling was associated with significant reductions in psychological distress, with a mean effect size (d) of 0.93(95% CI = 0.89–0.97) using a fixed effects model and 1.09 (95% CI = 0.97–1.22) using a random effects model. Datasets using the YP‐CORE had larger effect sizes than those using the SDQ, and datasets with more complete response rates had lower outcomes than those with poorer response rates. Conclusion: The results confirm that school‐based counselling, as delivered in the UK, is associated with significant reductions in psychological distress, comparable to adult counselling and psychotherapy services.     

Omimigrid-Pc: A new development in computerized repertory grids

A new approach to computer programs used to administer and/or analyze repertory grids is described. The system outlined here, OMNIGRID-PC, is a variation of OMNIGRID, which was designed to have broad practical and theoretical applications. The general features of OMNIGRID are discussed; then the unique features of the OMNIGRID-PC system, Versions 1.0 and 1.5, are explained in detail along with their underlying theoretical rationale. The Appendix more fully explicates the interpretive significance of the most substantive new feature of Version 3.5–Cromwell Format data collection.     

Collective Intentionality,Evolutionary Biology and Social Reality1

Abstract

The paper aims to clarify and scrutinize Searle”s somewhat puzzling statement that collective intentionality is a biologically primitive phenomenon. It is argued that the statement is not only meant to bring out that “collective intentionality” is not further analyzable in terms of individual intentionality. It also is meant to convey that we have a biologically evolved innate capacity for collective intentionality.The paper points out that Searle”s dedication to a strong notion of collective intentionality considerably delimits the scope of his endeavor. Furthermore, evolutionary theory does not vindicate that an innate capacity for collective intentionality is a necessary precondition for cooperative behavior. ^{1 1}Useful comments made by the participants of the Amsterdam seminar in Philosophy and History of Economics (11 November 2002), by the participants of the Third Workshop in Collective Intentionality (Rotterdam, 12-14 December 2002), and by the editors of this special issue are gratefully acknowledged. I also want to thank an anonymous referee for making helpful suggestions.      

Temperament Styles of Nigerian and U.S. Children

Abstract

Temperament styles of 400 Nigerian children are described in reference to possible gender and age differences and compared with those of 3200 U.S. children in light of Jung's theory of temperament as modified by Myers and Briggs, one that highlights four bipolar qualities: extroversion-introversion, practical-imaginative, thinking-feeling, and organized-flexible styles. Nigerian children generally prefer introverted to extroverted styles, practical to imaginative styles, feeling to thinking styles, and organized to flexible styles. In contrast to males, females are more likely to prefer feeling and organized styles. Age differences are seen only on organized-flexible styles, with a preference for flexible styles increasing with age. In contrast to U.S. children, Nigerian children tend to express higher preferences for introversion, practical, feeling, and organized styles.     

Invited Address at the Occasion of the Bertelson Award 2005 Impairments in visual discrimination in amnesia: Implications for theories of the role of medial temporal lobe regions in human memory

A prominent and long-standing view of human long-term memory is that structures within the medial temporal lobe (MTL) work together to support the acquisition of memory for facts and events. In contrast to this view, recent studies in rats and non-human primates suggest dissociations in function between regions comprising the MTL. Evidence in support of such specialisation in humans, however, has been inconclusive, leading some researchers to propose that human MTL functions as a unitary system uniquely specialised for the acquisition and storage of long-term memory. This paper reviews some of the key studies from the animal and human literature that support an account of functional differentiation and discusses the different theoretical positions that have emerged from their findings. A series of recent experiments in humans designed to determine whether there is functional homogeneity in MTL regions across species are also reviewed and an alternative account of human memory—in which long-term memory is dependent upon representations distributed throughout the human brain rather than one specialised system—is proposed.